Regression testingApplicable on every modified software after fixing bug or enhancement of software. Executing previously passed test cases, which is related to the previously failed test cases or related enhancement. If regression testing failed then report that bug as new bug. This testing is basically used to test that due to any changing the other parts of the software are affecting or not.
Regression testing is of 3 types they are:
1) Unit regression testing
2) Partial Regression testing and
3) Complete regression testing
By Precise Testing Solution